CN105227274A - Retransmit merging method and device - Google Patents

Abstract

The invention discloses a kind of re-transmission merging method, isolate the second system bit comprised in the first system bit and data retransmission comprised in data to decode; The first accounting that described the first system bit is corresponding and the second accounting corresponding to described second system bit is determined respectively according to described the first system bit and described second system bit; Be multiplied by data that described first accounting obtains and described data retransmission to data to decode to be multiplied by the data that described second accounting obtains and to merge.The present invention also also discloses a kind of re-transmission and merges device.

Description

Retransmit merging method and device

Technical field

The present invention relates to the data transmission technology of wireless communication system, particularly relate to a kind of re-transmission merging method and device.

Background technology

WCDMA communication system is a kind of communication system based on Wideband Code Division Multiple Access (WCDMA), the service of different terminal equipments by using different scramblers can obtain base station with frequency simultaneously.In communication process, for the data service that requirement of real-time is not high, its communication pattern adopted is, base station sends data to terminal equipment, terminal equipment returns response message to feed back current whether successfully reception to base station, when the unsuccessful reception data of terminal equipment, then base station needs to resend data.And when communications condition is undesirable, the error rate that base station sends data to terminal equipment will rise greatly, the number of times making base station resend data improves, thus greatly increases transmission delay, and throughput is lower.

For solving the problem, technology conventional is at present traditional maximum-ratio combing (MaximalRatioCombining, hereinafter referred to as MRC) method, namely terminal equipment is after receiving data retransmission, before decoding, the upper data once received are merged with data retransmission, data after being combined again carry out maximum-ratio combing, to improve decoding success rate.

But, in WCDMA communication, the data that base station sends comprise systematic bits and check bit, wherein systematic bits refers to the bit shared by the initial data that transmitting apparatus sends, check bit is the bit increased when WCDMA communication system is transmitted, whether correct, and for the redundancy versions of different WCDMA communication system if being used for check data, the accounting of its check bit is also different.As depicted in figs. 1 and 2, be respectively the redundancy versions 6 of WCDMA communication system and the systematic bits of redundancy versions 2 correspondence and check bit amplitude distribution schematic diagram, and in data transmission procedure, the significance level of systematic bits is far longer than the significance level of check bit.Traditional MRC merging method does not have compartment system bit and check bit when merging, and be therefore difficult to obtain desirable diversity gain, throughput is lower.

Summary of the invention

In view of this, the embodiment of the present invention expects that providing a kind of retransmits merging method and device, is difficult to obtain desirable diversity gain, the problem that throughput is lower in order to solve existing re-transmission merging method.

The technical scheme of the embodiment of the present invention is achieved in that

The embodiment of the present invention provides a kind of and retransmits merging method, comprising:

Isolate the second system bit comprised in the first system bit and data retransmission comprised in data to decode;

The first accounting that described the first system bit is corresponding and the second accounting corresponding to described second system bit is determined respectively according to described the first system bit and described second system bit;

Be multiplied by data that described first accounting obtains and described data retransmission to described data to decode to be multiplied by the data that described second accounting obtains and to merge.

Further, described first accounting and described second accounting sum are 1.

Further, described isolate in data to decode comprise in the first system bit and data retransmission and comprise second system bit before, described method also comprises: carry out AGC inverse transformation to described data to decode and described data retransmission respectively.

Further, describedly determine the first accounting that described the first system bit is corresponding and the second accounting corresponding to described second system bit respectively according to described the first system bit and described second system bit, comprising:

Calculate the first system bit power corresponding to described the first system bit and second system bit power corresponding to described second system bit respectively;

Described first accounting and described second accounting is calculated according to described the first system bit power and described second system bit power.

Further, describedly calculate the first system bit power corresponding to described the first system bit and second system bit power corresponding to described second system bit respectively, comprising:

Following formula (1) is adopted to calculate described the first system bit power:

$\mathrm{powA}=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}{A}_i^2---\left(1\right)$

Wherein, A _irepresent the amplitude of i-th systematic bits in described the first system bit, K represents total number of the systematic bits comprised in described the first system bit, and powA represents the gross power of described the first system bit; Following formula (2) is adopted to calculate described second system bit power:

$\mathrm{powB}=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}{B}_i^2---\left(2\right)$

Wherein, B _irepresent the amplitude of i-th systematic bits in described second system bit, K represents total number of the systematic bits comprised in described second system bit, and powB represents the gross power of described second system bit;

Accordingly, describedly calculate described first accounting and described second accounting according to described the first system bit power and described second system bit power, comprising:

Following formula (3) is adopted to calculate described first accounting:

$\mathrm{\α}=\frac{\mathrm{powA}}{\mathrm{powA}+\mathrm{powB}}---\left(3\right)$

Wherein, α represents the first accounting; Following formula (4) is adopted to calculate described second accounting:

$\mathrm{\β}=\frac{\mathrm{powB}}{\mathrm{powA}+\mathrm{powB}}---\left(4\right)$

Wherein, β represents the second accounting.

Further, describedly determine the first accounting that described the first system bit is corresponding and the second accounting corresponding to described second system bit respectively according to described the first system bit and described second system bit, comprising:

Calculate the first amplitude summation corresponding to described the first system bit and the second amplitude summation corresponding to described second system bit respectively;

Described first accounting and described second accounting is calculated according to described first amplitude summation and described second amplitude summation.

Further, describedly calculate the first amplitude summation corresponding to described the first system bit and the second amplitude summation corresponding to described second system bit respectively, comprising:

Following formula (5) is adopted to calculate described first amplitude summation:

$A=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}\left|A_i\right|---\left(5\right)$

Wherein, A _irepresent the amplitude of i-th systematic bits in described the first system bit, K represents total number of the systematic bits comprised in described the first system bit, and A represents described first amplitude summation; Following formula (6) is adopted to calculate described second amplitude summation:

$B=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}\left|B_i\right|---\left(6\right)$

Wherein, B _irepresent the amplitude of i-th systematic bits in described second system bit, K represents total number of the systematic bits comprised in described second system bit, and B represents described second amplitude summation;

Accordingly, described according to described first amplitude summation and described second amplitude summation described first accounting of calculating and described second accounting, comprising:

Following formula (7) is adopted to calculate described first accounting:

$\mathrm{\α}=\frac{A}{A+B}---\left(7\right)$

Wherein, α represents the first accounting; Formula (4) is adopted to calculate described second accounting:

$\mathrm{\β}=\frac{B}{A+B}---\left(8\right)$

Wherein, β represents the second accounting.

The embodiment of the present invention provides a kind of re-transmission to merge device, comprising:

Separation module, for separating of going out the second system bit comprised in the first system bit and data retransmission that comprise in data to decode;

Determination module, for determining the first accounting that described the first system bit is corresponding and the second accounting corresponding to described second system bit respectively according to described the first system bit and described second system bit;

Merge module, be multiplied by the data that described second accounting obtains merge for being multiplied by data that described first accounting obtains and described data retransmission to described data to decode.

Further, described first accounting and described second accounting sum are 1.

Further, described device also comprises:

Conversion module, for before isolating in data to decode and comprising in the first system bit and data retransmission and comprise second system bit, carries out AGC inverse transformation to described data to decode and described data retransmission respectively.

Further, described determination module, specifically for calculating the first system bit power corresponding to described the first system bit and second system bit power corresponding to described second system bit respectively; Described first accounting and described second accounting is calculated according to described the first system bit power and described second system bit power.

Further, described determination module, calculates described the first system bit power specifically for adopting following formula (9):

$\mathrm{powA}=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}{A}_i^2---\left(9\right)$

Wherein, A _irepresent the amplitude of i-th systematic bits in described the first system bit, K represents total number of the systematic bits comprised in described the first system bit, and powA represents the gross power of described the first system bit; Following formula (10) is adopted to calculate described second system bit power:

$\mathrm{powB}=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}{B}_i^2---\left(10\right)$

Wherein, B _irepresent the amplitude of i-th systematic bits in described second system bit, K represents total number of the systematic bits comprised in described second system bit, and powB represents the gross power of described second system bit; Following formula (11) is adopted to calculate described first accounting:

$\mathrm{\α}=\frac{\mathrm{powA}}{\mathrm{powA}+\mathrm{powB}}---\left(11\right)$

Wherein, α represents the first accounting; Following formula (12) is adopted to calculate described second accounting:

$\mathrm{\β}=\frac{\mathrm{powB}}{\mathrm{powA}+\mathrm{powB}}---\left(12\right)$

Wherein, β represents the second accounting.

Further, described determination module, specifically for calculating the first amplitude summation corresponding to described the first system bit and the second amplitude summation corresponding to described second system bit respectively; Described first accounting and described second accounting is calculated according to described first amplitude summation and described second amplitude summation.

Further, described determination module, calculates described first amplitude summation specifically for adopting following formula (13):

$A=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}\left|A_i\right|---\left(13\right)$

Wherein, A _irepresent the amplitude of i-th systematic bits in described the first system bit, K represents total number of the systematic bits comprised in described the first system bit, and A represents described first amplitude summation; Following formula (14) is adopted to calculate described second amplitude summation:

$B=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}\left|B_i\right|---\left(14\right)$

Wherein, B _irepresent the amplitude of i-th systematic bits in described second system bit, K represents total number of the systematic bits comprised in described second system bit, and B represents described second amplitude summation; Following formula (15) is adopted to calculate described first accounting:

$\mathrm{\α}=\frac{A}{A+B}---\left(15\right)$

Wherein, α represents the first accounting; Formula (16) is adopted to calculate described second accounting:

$\mathrm{\β}=\frac{B}{A+B}---\left(16\right)$

Wherein, β represents the second accounting.

The re-transmission merging method that the embodiment of the present invention provides and device, by determining the first accounting that the first system bit is corresponding and the second accounting corresponding to second system bit respectively, then the product of described data to decode and described first accounting and the product of described data retransmission and described second accounting example is calculated, then data to decode and the product of the first accounting and the product of described data retransmission and described second accounting example are merged, like this, take full advantage of the importance of systematic bits, and then the data after being combined are when carrying out decoding, comparatively ideal diversity gain can be obtained, throughput can be improved.

Accompanying drawing explanation

Fig. 1 is systematic bits and the check bit amplitude distribution schematic diagram of redundancy versions 6 correspondence of WCDMA communication system;

Fig. 2 is systematic bits and the check bit amplitude distribution schematic diagram of redundancy versions 2 correspondence of WCDMA communication system;

The re-transmission that Fig. 3 provides for the embodiment of the present invention merges method flow schematic diagram;

The one re-transmission merging method detailed process schematic diagram that Fig. 4 provides for the embodiment of the present invention;

The re-transmission merging method that Fig. 5 provides for the embodiment of the present invention merges methods experiment results contrast schematic diagram with traditional MRC;

The re-transmission that Fig. 6 provides for the embodiment of the present invention merges apparatus structure schematic diagram.

Embodiment

Embodiment

It should be noted that, the executive agent of the present embodiment is receiving terminal and the subscriber equipment of data, and this subscriber equipment for supporting the various terminal equipments of WCDMA communication, such as, can be able to be handheld intelligent terminal device, comprising notebook, mobile phone, panel computer etc.; Also can be fixed terminal equipment, comprise computer etc.Data described here can refer to the communication data that base station sends to subscriber equipment, comprise the business datum that the requirement of real-time such as short message service data, MMS data is not high.

When communications condition is undesirable, the probability that the data that base station sends make a mistake is also higher, and so subscriber equipment is when the data that decoding receives, and successfully decoded probability is also lower.When subscriber equipment decoding is unsuccessful, then preserve data and the data to decode of this reception, in addition, it should be noted that, this data to decode is the soft Bit data that the data received obtain by subscriber equipment after process, here the soft bit process method that subscriber equipment adopts is prior art, tires out no longer in detail here and states.

When the data that subscriber equipment receives make a mistake, subscriber equipment sends repeat requests to base station, after base station receives repeat requests, again send data, referred to herein as data retransmission to subscriber equipment, after subscriber equipment receives data retransmission, after carrying out soft bit process to it, then merged by the data to decode that itself and last time receive, the data after being then combined carry out decoding, concrete merging method, vide infra.

The re-transmission that Fig. 3 provides for the embodiment of the present invention merges method flow schematic diagram, as shown in Figure 3, comprises the following steps:

Step 101, isolates the second system bit comprised in the first system bit and described data retransmission comprised in described data to decode;

Specifically, in WCDMA communication, the data that base station sends comprise systematic bits and check bit, wherein, systematic bits refers to the bit shared by the initial data that base station sends, and check bit is the bit increased when WCDMA communication system is transmitted, when subscriber equipment receives data, according to the verification comprised in the check bit stored in subscriber equipment and received data than bit, whether correctly carry out the data that inspection institute receives.Systematic bits, by resolving data to decode and data retransmission, is isolated according to comprised identifier by subscriber equipment.

In addition, the systematic bits comprised in order to the data to decode distinguishing the unsuccessful decoding that subscriber equipment last time receives is different from the systematic bits comprised in the data retransmission with receipt of subsequent, the systematic bits that the data to decode of subscriber equipment reception last time comprises can be called the first system bit, the systematic bits comprised in the data retransmission of subscriber equipment receipt of subsequent is called second system bit, by that analogy as distinguishing.

Step 102, determines the first accounting that described the first system bit is corresponding and the second accounting corresponding to described second system bit respectively according to described the first system bit and described second system bit;

In order to the accounting distinguished corresponding to the first system bit is different from the accounting corresponding to second system bit, here, accounting corresponding to the first system bit is called the first accounting, and the accounting corresponding to second system bit is called the second accounting, by that analogy as distinguishing.

Specifically, first accounting and the second accounting are the decimal being less than 1, in addition, after data to decode and data retransmission being merged to make subscriber equipment, can obtain closer to actual value corresponding to systematic bits, need described first accounting of requirement and described second accounting sum to be 1.

Further, any one determining that the first accounting that described the first system bit is corresponding and the second accounting corresponding to described second system bit can adopt in following two kinds of methods respectively according to described the first system bit and described second system bit described realizes.

Method one:

First, the first system bit power corresponding to described the first system bit and second system bit power corresponding to described second system bit is calculated respectively;

Concrete, following formula (1) can be adopted to calculate described the first system bit power:

$\mathrm{powA}=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}{A}_i^2---\left(1\right)$

Wherein, A _irepresent the amplitude of i-th systematic bits in described the first system bit, K represents total number of the systematic bits comprised in described the first system bit, and powA represents the gross power of described the first system bit; Following formula (2) is adopted to calculate described second system bit power:

$\mathrm{powB}=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}{B}_i^2---\left(2\right)$

Wherein, B _irepresent the amplitude of i-th systematic bits in described second system bit, K represents total number of the systematic bits comprised in described second system bit, and powB represents the gross power of described second system bit.

Then, described first accounting and described second accounting is calculated according to described the first system bit power and described second system bit power.

Concrete, after obtaining described the first system bit power and described second system bit power, following formula (3) can be adopted to calculate described first accounting:

$\mathrm{\α}=\frac{\mathrm{powA}}{\mathrm{powA}+\mathrm{powB}}---\left(3\right)$

Wherein, α represents the first accounting; Formula (4) is adopted to calculate described second accounting:

$\mathrm{\β}=\frac{\mathrm{powB}}{\mathrm{powA}+\mathrm{powB}}---\left(4\right)$

Wherein, β represents the second accounting.

Method two:

First, the first amplitude summation corresponding to described the first system bit and the second amplitude summation corresponding to described second system bit is calculated respectively;

Concrete, following formula (5) can be adopted to calculate described first amplitude summation:

$A=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}\left|A_i\right|---\left(5\right)$

Wherein, A _irepresent the amplitude of i-th systematic bits in described the first system bit, K represents total number of the systematic bits comprised in described the first system bit, and A represents described first amplitude summation; Following formula (6) is adopted to calculate described second amplitude summation:

$B=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}\left|B_i\right|---\left(6\right)$

Wherein, B _irepresent the amplitude of i-th systematic bits in described second system bit, K represents total number of the systematic bits comprised in described second system bit, and B represents described second amplitude summation.

Then, described first accounting and described second accounting is calculated according to described first amplitude summation and described second amplitude summation.

Concrete, after obtaining described first amplitude summation and described second amplitude summation, following formula (7) can be adopted to calculate described first accounting:

$\mathrm{\α}=\frac{A}{A+B}---\left(7\right)$

Wherein, α represents the first accounting; Formula (8) is adopted to calculate described second accounting:

$\mathrm{\β}=\frac{B}{A+B}---\left(8\right)$

Wherein, β represents the second accounting.

Step 103, is multiplied by data that described first accounting obtains and described data retransmission to described data to decode and is multiplied by the data that described second accounting obtains and merges.

Concrete, if the method that step 103 uses when determining the first accounting that described the first system bit is corresponding and the second accounting corresponding to described second system bit is method one, then this step adopts following formula (17) to be multiplied by data that described first accounting obtains and described data retransmission to described data to decode to be multiplied by the data that described second accounting obtains and to merge:

$\mathrm{merge}=\stackrel{\‾}{A}*\frac{\mathrm{powA}}{\mathrm{powA}+\mathrm{powB}}+\stackrel{\‾}{B}*\frac{\mathrm{powB}}{\mathrm{powA}+\mathrm{powB}}---\left(17\right)$

Wherein, represent data to decode, represent data retransmission, merge represents merging data.If the method that step 103 uses when determining the first accounting that described the first system bit is corresponding and the second accounting corresponding to described second system bit is method two, then this step adopts following formula (18) to be multiplied by data that described first accounting obtains and described data retransmission to described data to decode to be multiplied by the data that described second accounting obtains and to merge:

$\mathrm{merge}=\stackrel{\‾}{A}*\frac{A}{A+B}+\stackrel{\‾}{B}*\frac{B}{A+B}---\left(18\right)$

In addition, subscriber equipment, after obtaining merging data, carries out decoding to this merging data, like this, greatly can improve decoding success rate.Concrete, because data to decode and data retransmission are all based on soft bit, therefore merging data is also based on soft bit, threshold judgement method can be taked to carry out decoding, if namely merging data is greater than decision threshold as 0.5, be then translated into 1, if merging data is less than decision threshold as 0.5, be then translated into 0.Above method, only for illustrating, in practical application, can also adopt other interpretation method, being not specifically limited here.

In addition, the data to decode that the present embodiment uses and data retransmission are all through automatic growth control (AutomaticGainControl, AGC) data after process, in order to make handled data closer to initial data, then before isolating systematic bits, respectively AGC inverse transformation is carried out to described data to decode and described data retransmission.To the AGC conversion adopted during original data processing before concrete inverse transform method depends on, be not specifically limited here.

The re-transmission merging method that the embodiment of the present invention provides and device, by determining the first accounting that the first system bit is corresponding and the second accounting corresponding to second system bit respectively, then the product of described data to decode and described first accounting and the product of described data retransmission and described second accounting example is calculated, then data to decode and the product of the first accounting and the product of described data retransmission and described second accounting example are merged, like this, take full advantage of the importance of systematic bits, and then the data after being combined are when carrying out decoding, comparatively ideal diversity gain can be obtained, throughput can be improved.

Fig. 4 retransmits merging method detailed process schematic diagram for the one that the embodiment of the present invention provides, and as shown in Figure 4, specifically comprises the steps:

Step 201, preserves the data to decode of the unsuccessful decoding that last time receives;

Step 202, receives data retransmission;

Step 203, carries out AGC inverse transformation to described data to decode and described data retransmission respectively;

Step 204, isolates the second system bit comprised in the first system bit and data retransmission comprised in data to decode;

It should be noted that, the data to decode inside this step and data retransmission all refer to the data of carrying out after AGC inverse transformation.That is, the first system bit inside this step and subsequent step all refers to be separated from the data to decode carried out after AGC inverse transformation, and second system bit all refers to be separated from the data retransmission carried out after AGC inverse transformation.Therefore, the first system bit in subsequent step and second system bit all refer to the systematic bits after AGC inverse transformation.

Step 205, calculates the first system bit power corresponding to described the first system bit and second system bit power corresponding to described second system bit respectively;

Concrete, above-mentioned formula (1) can be adopted to calculate described the first system bit power, but parameter wherein change all to some extent, wherein, A _irepresent the amplitude of i-th systematic bits in the first system bit after AGC inverse transformation, K represents total number of the systematic bits comprised in described the first system bit, and powA represents the gross power of the first system bit after AGC inverse transformation; Adopt above-mentioned formula (2) to calculate described second system bit power, but parameter wherein also change all to some extent, wherein, B _irepresent the amplitude of i-th systematic bits in the second system bit after AGC inverse transformation, K represents total number of the systematic bits comprised in described second system bit, and powB represents the gross power of the second system bit after AGC inverse transformation.

Step 206, calculates described first accounting and described second accounting according to described the first system bit power and described second system bit power;

Concrete, above-mentioned formula (3) and formula (4) can be adopted to calculate described first accounting and described second accounting, refer to the correlation step inside embodiment described in Fig. 3, be not repeated here.

Step 207, is multiplied by data that described first accounting obtains and described data retransmission to described data to decode and is multiplied by the data that described second accounting obtains and merges, obtain merging data;

Concrete, this step can adopt above-mentioned formula (9) to be multiplied by data that described first accounting obtains and described data retransmission to described data to decode and be multiplied by the data that described second accounting obtains and merge, but parameter wherein changes all to some extent, wherein represent the data to decode after AGC inverse transformation, represent the data retransmission after AGC inverse transformation, merge represents merging data.

Step 208, is combined data and carries out decoding.

Through experimental verification, the invention described above embodiment, in WCDMA communication system, merges compared to traditional maximum-ratio combing (MaximalRatioCombining, MRC), greatly can promote throughput, experimental situation is WCDMA communication system, and environment configurations is HSET864QAM, uses 30 kilometers of speed per hour list footpath channels, transmit data first and use redundancy versions 6, data retransmission uses redundancy versions 2, experimental result, as shown in Figure 5.

For realizing the re-transmission merging method that the invention described above embodiment provides, the embodiment of the present invention additionally provides a kind of re-transmission and merges device, its know-why is similar to the re-transmission merging method that the invention described above embodiment provides with the technique effect of generation, is not repeated here.The composition structure that the re-transmission provided the embodiment of the present invention below merges device is described in detail.

The re-transmission that Fig. 6 provides for the embodiment of the present invention merges apparatus structure schematic diagram, as shown in Figure 6, comprising: separation module 11, determination module 12 and merging module 13.Wherein,

Separation module 11, comprises second system bit for separating of going out in described data to decode to comprise in the first system bit and described data retransmission;

Determination module 12, for determining the first accounting that described the first system bit is corresponding and the second accounting corresponding to described second system bit respectively according to described the first system bit and described second system bit;

Merge module 13, be multiplied by the data that described second accounting obtains merge for being multiplied by data that described first accounting obtains and described data retransmission to described data to decode.

Above-mentioned re-transmission merges device and comprises further, preserves module 15, for preserving the data to decode of the unsuccessful decoding that last time receives.

Above-mentioned re-transmission merges device and comprises further, and receiver module 16, for receiving data retransmission.

Further, described first accounting and described second accounting sum are 1.

Above-mentioned re-transmission merges device and comprises further, conversion module 14, for before isolating the second system bit comprised in the first system bit and data retransmission comprised in data to decode, respectively AGC inverse transformation is carried out to described data to decode and described data retransmission.

Further, described determination module 12, specifically for calculating the first system bit power corresponding to described the first system bit and second system bit power corresponding to described second system bit respectively; Described first accounting and described second accounting is calculated according to described the first system bit power and described second system bit power.

Further, described determination module 12, calculates described the first system bit power specifically for adopting following formula (9):

$\mathrm{powA}=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}{A}_i^2---\left(9\right)$

Wherein, A _irepresent the amplitude of i-th systematic bits in described the first system bit, K represents total number of the systematic bits comprised in described the first system bit, and powA represents the gross power of described the first system bit; Following formula (10) is adopted to calculate described second system bit power:

$\mathrm{powB}=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}{B}_i^2---\left(10\right)$

Wherein, B _irepresent the amplitude of i-th systematic bits in described second system bit, K represents total number of the systematic bits comprised in described second system bit, and powB represents the gross power of described second system bit; Following formula (11) is adopted to calculate described first accounting:

$\mathrm{\α}=\frac{\mathrm{powA}}{\mathrm{powA}+\mathrm{powB}}---\left(11\right)$

Wherein, α represents the first accounting; Following formula (12) is adopted to calculate described second accounting:

$\mathrm{\β}=\frac{\mathrm{powB}}{\mathrm{powA}+\mathrm{powB}}---\left(12\right)$

Wherein, β represents the second accounting.

Further, described determination module 12, specifically for calculating the first amplitude summation corresponding to described the first system bit and the second amplitude summation corresponding to described second system bit respectively; Described first accounting and described second accounting is calculated according to described first amplitude summation and described second amplitude summation.

Further, described determination module 12, calculates described first amplitude summation specifically for adopting following formula (13):

$A=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}\left|A_i\right|---\left(13\right)$

Wherein, A _irepresent the amplitude of i-th systematic bits in described the first system bit, K represents total number of the systematic bits comprised in described the first system bit, and A represents described first amplitude summation; Following formula (14) is adopted to calculate described second amplitude summation:

$B=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}\left|B_i\right|---\left(14\right)$

Wherein, B _irepresent the amplitude of i-th systematic bits in described second system bit, K represents total number of the systematic bits comprised in described second system bit, and B represents described second amplitude summation; Following formula (15) is adopted to calculate described first accounting:

$\mathrm{\α}=\frac{A}{A+B}---\left(15\right)$

Wherein, α represents the first accounting; Formula (16) is adopted to calculate described second accounting:

$\mathrm{\β}=\frac{B}{A+B}---\left(16\right)$

Wherein, β represents the second accounting.

Above-mentioned re-transmission merges device and comprises further, and decoding module 17, carries out decoding for being combined data.

In actual applications, described separation module 11, described determination module 12, described merging module 13 and described conversion module 14 can realize by being arranged in the central processing unit (CPU) of subscriber equipment, microprocessor (MPU), digital signal processor (DSP) or field programmable gate array (FPGA); Described preservation module 15 can be realized by the memory being arranged in subscriber equipment; Described receiver module 16 can be realized by the receiver being arranged in subscriber equipment; Described decoding module 17 can be realized by the decoder being arranged in subscriber equipment.

In several embodiment provided by the present invention, should be understood that, disclosed method and apparatus, can realize in other way.Device embodiment described above is only schematic, such as, the division of described module, be only a kind of logic function to divide, actual can have other dividing mode when realizing, and as: multiple unit or assembly can be in conjunction with, maybe can be integrated into another system, or some features can be ignored, or do not perform.In addition, the communication connection each other of shown or discussed each part can be by some interfaces, the indirect coupling of equipment or unit or communication connection, can be electrical, machinery or other forms of.

The above-mentioned unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, also can be distributed in multiple network element; Part or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.

In addition, each functional unit in various embodiments of the present invention can all be integrated in a processing unit, also can be each unit individually as a unit, also can two or more unit in a unit integrated; Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form that hardware also can be adopted to add SFU software functional unit realizes.

One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: movable storage device, read-only memory (ROM, Read-OnlyMemory), magnetic disc or CD etc. various can be program code stored medium.

Or, if the embodiment of the present invention using the form of software function module realize and as independently production marketing or use time, also can be stored in a computer read/write memory medium.Based on such understanding, the technical scheme of the embodiment of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium, comprises some instructions and performs all or part of of method described in each embodiment of the present invention in order to make a computer equipment (can be personal computer, server or the network equipment etc.).And aforesaid storage medium comprises: movable storage device, ROM, magnetic disc or CD etc. various can be program code stored medium.

The present invention is only for above-described embodiment, but be not limited only to this, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.

The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.

Claims (14)

1. retransmit a merging method, it is characterized in that, described method comprises:

Isolate the second system bit comprised in the first system bit and data retransmission comprised in data to decode;

The first accounting that described the first system bit is corresponding and the second accounting corresponding to described second system bit is determined respectively according to described the first system bit and described second system bit;

Be multiplied by data that described first accounting obtains and described data retransmission to described data to decode to be multiplied by the data that described second accounting obtains and to merge.

2. method according to claim 1, is characterized in that, described first accounting and described second accounting sum are 1.

3. method according to claim 1 and 2, it is characterized in that, described isolate in data to decode comprise in the first system bit and data retransmission and comprise second system bit before, described method also comprises: carry out AGC inverse transformation to described data to decode and described data retransmission respectively.

4. method according to claim 1 and 2, is characterized in that, describedly determines the first accounting that described the first system bit is corresponding and the second accounting corresponding to described second system bit respectively according to described the first system bit and described second system bit, comprising:

Calculate the first system bit power corresponding to described the first system bit and second system bit power corresponding to described second system bit respectively;

Described first accounting and described second accounting is calculated according to described the first system bit power and described second system bit power.

5. method according to claim 4, is characterized in that, describedly calculates the first system bit power corresponding to described the first system bit and second system bit power corresponding to described second system bit respectively, comprising:

Following formula (1) is adopted to calculate described the first system bit power:

$\mathrm{powA}=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}{A}_i^2---\left(1\right)$

Wherein, A _irepresent the amplitude of i-th systematic bits in described the first system bit, K represents total number of the systematic bits comprised in described the first system bit, and powA represents the gross power of described the first system bit; Following formula (2) is adopted to calculate described second system bit power:

$\mathrm{powB}=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}{B}_i^2---\left(2\right)$

Wherein, B _irepresent the amplitude of i-th systematic bits in described second system bit, K represents total number of the systematic bits comprised in described second system bit, and powB represents the gross power of described second system bit;

Accordingly, describedly calculate described first accounting and described second accounting according to described the first system bit power and described second system bit power, comprising:

Following formula (3) is adopted to calculate described first accounting:

$\mathrm{\α}=\frac{\mathrm{powA}}{\mathrm{powA}+\mathrm{powB}}---\left(3\right)$

Wherein, α represents the first accounting; Following formula (4) is adopted to calculate described second accounting:

$\mathrm{\β}=\frac{\mathrm{powB}}{\mathrm{powA}+\mathrm{powB}}---\left(4\right)$

Wherein, β represents the second accounting.

6. method according to claim 1 and 2, is characterized in that, describedly determines the first accounting that described the first system bit is corresponding and the second accounting corresponding to described second system bit respectively according to described the first system bit and described second system bit, comprising:

Calculate the first amplitude summation corresponding to described the first system bit and the second amplitude summation corresponding to described second system bit respectively;

Described first accounting and described second accounting is calculated according to described first amplitude summation and described second amplitude summation.

7. method according to claim 6, is characterized in that, describedly calculates the first amplitude summation corresponding to described the first system bit and the second amplitude summation corresponding to described second system bit respectively, comprising:

Following formula (5) is adopted to calculate described first amplitude summation:

$A=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}\left|A_i\right|---\left(5\right)$

Wherein, A _irepresent the amplitude of i-th systematic bits in described the first system bit, K represents total number of the systematic bits comprised in described the first system bit, and A represents described first amplitude summation; Following formula (6) is adopted to calculate described second amplitude summation:

$B=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}\left|B_i\right|---\left(6\right)$

Wherein, B _irepresent the amplitude of i-th systematic bits in described second system bit, K represents total number of the systematic bits comprised in described second system bit, and B represents described second amplitude summation;

Accordingly, described according to described first amplitude summation and described second amplitude summation described first accounting of calculating and described second accounting, comprising:

Following formula (7) is adopted to calculate described first accounting:

$\mathrm{\α}=\frac{A}{A+B}---\left(7\right)$

Wherein, α represents the first accounting; Formula (4) is adopted to calculate described second accounting:

$\mathrm{\β}=\frac{B}{A+B}---\left(8\right)$

Wherein, β represents the second accounting.

8. retransmit and merge a device, it is characterized in that, described device comprises:

Separation module, for separating of going out the second system bit comprised in the first system bit and data retransmission that comprise in data to decode;

Determination module, for determining the first accounting that described the first system bit is corresponding and the second accounting corresponding to described second system bit respectively according to described the first system bit and described second system bit;

Merge module, be multiplied by the data that described second accounting obtains merge for being multiplied by data that described first accounting obtains and described data retransmission to described data to decode.

9. device according to claim 8, is characterized in that, described first accounting and described second accounting sum are 1.

10. device according to claim 8 or claim 9, it is characterized in that, described device also comprises:

Conversion module, for before isolating in data to decode and comprising in the first system bit and data retransmission and comprise second system bit, carries out AGC inverse transformation to described data to decode and described data retransmission respectively.

11. devices according to claim 8 or claim 9, is characterized in that, described determination module, specifically for calculating the first system bit power corresponding to described the first system bit and second system bit power corresponding to described second system bit respectively; Described first accounting and described second accounting is calculated according to described the first system bit power and described second system bit power.

12. devices according to claim 11, is characterized in that, described determination module, calculate described the first system bit power specifically for adopting following formula (9):

$\mathrm{powA}=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}{A}_i^2---\left(9\right)$

Wherein, A _irepresent the amplitude of i-th systematic bits in described the first system bit, K represents total number of the systematic bits comprised in described the first system bit, and powA represents the gross power of described the first system bit; Following formula (10) is adopted to calculate described second system bit power:

$\mathrm{powB}=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}{B}_i^2---\left(10\right)$

Wherein, B _irepresent the amplitude of i-th systematic bits in described second system bit, K represents total number of the systematic bits comprised in described second system bit, and powB represents the gross power of described second system bit; Following formula (11) is adopted to calculate described first accounting:

$\mathrm{\α}=\frac{\mathrm{powA}}{\mathrm{powA}+\mathrm{powB}}---\left(11\right)$

Wherein, α represents the first accounting; Following formula (12) is adopted to calculate described second accounting:

$\mathrm{\β}=\frac{\mathrm{powB}}{\mathrm{powA}+\mathrm{powB}}---\left(12\right)$

Wherein, β represents the second accounting.

13. devices according to claim 8 or claim 9, is characterized in that, described determination module, specifically for calculating the first amplitude summation corresponding to described the first system bit and the second amplitude summation corresponding to described second system bit respectively; Described first accounting and described second accounting is calculated according to described first amplitude summation and described second amplitude summation.

14. devices according to claim 13, is characterized in that, described determination module, calculate described first amplitude summation specifically for adopting following formula (13):

$A=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}\left|A_i\right|---\left(13\right)$

Wherein, A _irepresent the amplitude of i-th systematic bits in described the first system bit, K represents total number of the systematic bits comprised in described the first system bit, and A represents described first amplitude summation; Following formula (14) is adopted to calculate described second amplitude summation:

$B=\underset{i=1}{\overset{k}{\mathrm{\Σ}}}\left|B_i\right|---\left(14\right)$

Wherein, B _irepresent the amplitude of i-th systematic bits in described second system bit, K represents total number of the systematic bits comprised in described second system bit, and B represents described second amplitude summation; Following formula (15) is adopted to calculate described first accounting:

$\mathrm{\α}=\frac{A}{A+B}---\left(15\right)$

Wherein, α represents the first accounting; Formula (16) is adopted to calculate described second accounting:

$\mathrm{\β}=\frac{B}{A+B}---\left(16\right)$

Wherein, β represents the second accounting.